I mean when you’ve traveled part way, and then there is disruption preventing you from continuing the journey. So it wouldn’t be a same station exit. In the past I’ve exited at the station with the disruption and then walked to the nearest station on another line to tap in and continue the journey. I don’t know how much logging of such incidents they maintain, but everyone was ordered out of the station through announcements. However when calling the oyster helpline, once I got a refund given for the difference vs what the overall journey should have cost and once it was refused. Tbh shouldn’t even have to call in for something that’s an issue with the line and presumably affecting lots of people.

Re how a smoother solution could work – they could allow people to leave the disrupted station without tapping out and notify the surrounding stations so that the barriers be kept open, with no expectation of tapping in. This could be done for either anyone within a short timeframe, or for those with a transfer slip provided by the first station. This doesn’t need much integration with the main charging system.